C

@cinemaljy

4

C++
1 hour ago
#include <iostream> using namespace std; int main() { int n; cout<<"请输入n:\n"; cin>>n; cout<<"您输入的n是"<<n<<endl; int sum=0; for (int i=1;i<=n;i++){ sum=sum+i;

3

C++
1 hour ago
#include <iostream> using namespace std; int main() { int sum; int i; while(i<7){ sum=sum+i; i=i+1; }

2

C++
1 hour ago
#include <iostream> int main() { std::cout << "Hello world!" << std::endl; return 0; }

1

C++
2 hours ago
#include <iostream> using namespace std; int main() { double v; v=3.1415*5*5*20/3.0; cout << "v=" <<v<<endl; return 0; }